SEADRIFT COKE, LP

NPDES permit TX0090948 · Minor NON-POTW · administratively continued, expires 2025-09-11 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-09-11 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

2values over a limit
0required values missing, on 0 form(s)
0of 50 forms filed late

Last period with anything received: 2026-07-31. Most often over: Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) (1), Enterococci (1).

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (83)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 48 lb/d all year
001Solids, total suspendedDAILY MX <= 97 lb/d all year
001Oil & GreaseDAILY AV <= 16 lb/d all year
001Oil & GreaseDAILY MX <= 24 lb/d all year
001Carbon, tot organic [TOC]DAILY AV <= 80 lb/d all year
001Carbon, tot organic [TOC]DAILY MX <= 160 lb/d all year
001Sulfate, total [as SO4]DAILY MX <= 1127 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .98 lb/d all year
001Copper, total [as Cu]DAILY AV <= .056 lb/d all year
001Copper, total [as Cu]DAILY MX <= .12 lb/d all year
001TolueneDAILY AV <= .048 lb/d all year
001TolueneDAILY MX <= .096 lb/d all year
001BenzeneDAILY AV <= .096 lb/d all year
001BenzeneDAILY MX <= .192 lb/d all year
001PhenanthreneDAILY AV <= .029 lb/d all year
001PhenanthreneDAILY MX <= .061 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= .048 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= .096 lb/d all year
001NaphthaleneDAILY AV <= .048 lb/d all year
001NaphthaleneDAILY MX <= .096 lb/d all year
001PhenolsDAILY AV <= .096 lb/d all year
001PhenolsDAILY MX <= .192 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .202 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .821 MGD all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
101BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
101BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
101BOD, 5-day, 20 deg. CDAILY AV <= 1.2 lb/d all year
101BOD, 5-day, 20 deg. CDAILY MX <= 2.7 lb/d all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Solids, total suspendedDAILY AV <= 20 mg/L all year
101Solids, total suspendedDAILY MX <= 45 mg/L all year
101Solids, total suspendedDAILY AV <= 1.2 lb/d all year
101Solids, total suspendedDAILY MX <= 2.7 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= .015 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= .03 MGD all year
101Chlorine, total residualMO MIN >= 1 mg/L all year
101EnterococciDAILY AV <= 35 CFU/100mL all year
101EnterococciDAILY MX <= 89 CFU/100mL all year
TX1Whole Effluent Toxicity [WET] - M. beryllina7 DA MIN >= 7 % all year
TX1Whole Effluent Toxicity [WET] - M. beryllinaMO AV MN >= 7 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN >= 7 % all year
TX1Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)MO AV MN >= 7 % all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states